Although the locative case can be translated into English using
different words ("in", "at", "on") depending on the context, there is
some commonality in each word's meaning. The commonality seems to be
that the English words indicate a proximity to the location in
reference.

The locative case, along with the dative case, is one of the most often used cases.

-இடம்

The case suffix -இடம் is affiliated with the locative
case, but it takes on only a few specific meanings that are all
different. Some meanings resemble the locative case, while sometimes it
is used the way the dative case is. We will postpone it for later.